Visual Composer is a page builder plugin for WordPress which allows you to create stunning website content with simple drag and drop. With Visual Composer you can create and manage your WordPress content in minutes.
Visual Composer comes pre-packed with 40+ content elements allowing you to create pages and posts within minutes by simply dragging and dropping elements into your WordPress website. From simple text block and buttons to advanced accordions and post grids:
Contact form 7
Contact Form 7 can manage multiple contact forms, you can customize the form and the mail contents flexibly with simple markup. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering and so on. You can find docs, FAQ and more detailed information about Contact Form 7 on contactform7.com, support forum.
Flickr Badges Widget
Flickr badge is a tool based the Flickr badge service, offers because anyone with a Flickr account wants to show off pictures on their website or Blog, you can seriously customize the way your photos are being displayed. Just enter the URL of your Flickr album, set some simple options about how you want your badge to look, then you get a tailored HTML code, copy the HTML provided and paste it into the source code for your web page to generate the same result. It is flexibility and easy to use.
W3 Total Cache
W3 Total Cache improves the user experience of your site by improving your server performance, caching every aspect of your site, reducing the download times and providing transparent content delivery network (CDN) integration.
Find more detailed information on official page
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Loco Translate provides in-browser editing of WordPress translation files. It also provides localization tools for developers, such as extracting strings and generating templates.Features includes: Built-in translation editor within WordPress admin, create and update language files directly in your theme or plugin, extraction of translatable strings from your source code, protected language directory for saving custom translations, etc.